Picture for illustration purposes only

 Montana X-Treme Cleaning Brushes are the toughest nylon brushes in the industry. They are made with very stiff, heavy duty bristles and a solid brass core to assure your firearms will get a superior cleaning with minimal effort on your part. Standard 8 x 32 thread (.17 and .20 Cal brushes have a 5 x 40 thread, and shotgun brushes have a 5/16 x 27 thread).